Notice u/s 148 for thear 2014-2015

A housewife has received an Income Tax notice under Section 148 for the Assessment Year 2014-2015, stating that income chargeable to tax had escaped assessment. Her only income source is a flat gifted by her father, which she rents out for an annual income of £154,000. She is seeking guidance on how to respond to the tax authorities, who have requested details of her income and rent received.